Since upgrade to ubuntu 19.10, dhclient doesn't respect the "supersede domain-name-servers" in dhclient.conf

[Lyubomir]

dnsleaktest.com shows my ISP servers instead of the configured ones in dnscrypt-proxy. When i checked in network settings it was written the DNS for my router, but there is still this line below inside /etc/dhcp/dhclient.conf. Also, ifconfig shows that the interface name is still the same as below.

interface "wlp3s0" {
    supersede domain-name-servers 127.0.0.1;
}

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: isc-dhcp-client 4.4.1-2ubuntu5
ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0
Uname: Linux 5.3.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Sep 28 19:40:14 2019
DhclientLeases:

InstallationDate: Installed on 2019-07-23 (66 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: isc-dhcp
UpgradeStatus: Upgraded to eoan on 2019-09-27 (0 days ago)
mtime.conffile..etc.dhcp.dhclient.conf: 2019-08-31T22:54:40.376662

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Wolf Pichler (w-pichler)]

This could have the same reason as the bug filed by me:
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1882797